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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
<script>
        var num1=100;
    var num2=9;

    var num3=14;
    var num4=6;

   console.log(num1+num2);
   console.log(num3%num4);
   console.log(num1/num3);
   console.log(num3*20);
   console.log(num2*num4);

   //自增/自减运算符 +1/-1
   var num5=23;
   console.log(++num5);
   console.log(--num5);


   var key=22;
   var key2=26;
   console.log(++key);
   console.log(key2++);
</script>
    
</body>
</html>